I'm on the fence about this one. Like many have mentioned, the pokemon in this one tend to look like imitations (for some reason I keep thinking of that old GBC game "Devil Children"). I also literally just bought HeartGold last week. It's been a couple years but I still return to Pearl often -- there is just so much to do in a modern Pokemon game! So with all those numerous hours poured into one game, how many do I really need?
Then again, if I don't get it now then I won't be able to get Victini (legit, at least) and that happens to be one of the more appealing new pokes, in my opinion. Plus the story actually sounds interesting this time.
sigh..